3131004 has 24 divisors (see below), whose sum is σ = 7373520.
Its totient is φ = 1033984.
The previous prime is 3130997. The next prime is 3131017. The reversal of 3131004 is 4001313.
Adding to 3131004 its reverse (4001313), we get a palindrome (7132317).
It is a Harshad number since it is a multiple of its sum of digits (12).
It is a congruent number.
It is an unprimeable number.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 202 + ... + 2510.
It is an arithmetic number, because the mean of its divisors is an integer number (307230).
Almost surely, 23131004 is an apocalyptic number.
It is an amenable number.
3131004 is an abundant number, since it is smaller than the sum of its proper divisors (4242516).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
3131004 is a wasteful number, since it uses less digits than its factorization.
3131004 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 2429 (or 2427 counting only the distinct ones).
The product of its (nonzero) digits is 36, while the sum is 12.
The square root of 3131004 is about 1769.4643257212.
The cubic root of 3131004 is about 146.2944579575.
The spelling of 3131004 in words is "three million, one hundred thirty-one thousand, four".